Analytic Systems has been producing Pure Sinewave Inverters since 1994. Originally designed for running navigation computers on commercial and fishing vessels, the line has evolved into a range of models with power outputs from 300 to 3600 watts featuring Digital Signal Processor control. High power MosFet technology creates a low voltage Sinewave that is fed into a compact toroidal step-up transformer to produce a very clean low EMI AC output. Northrup Grumman evaluated inverters from all major manufacturers and chose the IPSi series by Analytic Systems for their Army portable command centers for precisely this reason.
Battery voltages of 12, 24, 32, 36, 48, 72 and 125 volts DC are supported, although the SPSi2400 and SPSi3600 are not available for 12 volts DC In (currents are too high) and the SPS300 does not support 125 volts DC In.